Hub-nut wrench for vehicles.



No. 837,493. PATENTBD DEC. 4, l906. y

T. OHORA. HUB NUT WR' H POR VBH s.

APPLIGATI LED NOV. 9. 19

A le? I 5 "UNITED STATES PATENT onirica.

Specicaton of Letters Patent.

Patented Dec. 4, 1906.

Application filed November 9, 1905. Serial No. 286.481.

To LtZZ whom it may con/067%:

Be itknown that I,'THoMAs OI'IORA, of Avooa, Iowa county,Wisconsin, haveinvented a IIub-\lut Vrench for Vehicles, of which the following is aspecification.

The device forming the subject of my present invention is intended foruse in unscrewing the hub-nuts of vehicles, whereby the Wheels thereofmay be removed from the axles from time to time to be greased orlubricated. l

The object of my invention is to improve this class of devices byproviding means for quickly clamping the axle-nut fast to the hub-guardof the wheel, so that when the lat ter is raised from the ground androtated in a backward direction the hubnut is carried around with it andunscrewed.

Various further advantages will appear from my construction by theconsideration of the following description and the accompanyingdrawings.

I also propose to provide a device more simply and cheaply constructedthan those heretofore invented and more conveniently operated.

My invention consists of the constructions and combinations, which willappear from the following description and are pointed out in the claims.

In the drawings hereto annexed, Figure 1 is in its lower half a sideelevation and in its upper half a longitudinal section of my wrench.Fig. 2 is an end elevation thereof from the handle end. Fig. 3 is alongitudinal median section in a plane at right angles to that ofFig. 1. Fig. 4 is a transverse section on the line 4 looking in thedirection of the arrow; and Fig. 5 is a view of my invention inconnection with a wheel-hub, showing its application for unscrewing thehubnut.

lIy invention comprises in the main a U- shaped outer member A, having aflattened base or central portion a, in which is rotatably mounted ascrew-stem l), and an inner U-shaped member B, which telescopes witln inthe member A and whose base has an aperture c, through which thescrew-stem b passes7 and a nut d, which engages with the threads of thestem b. The screw-stein b has on its front or outer end a handle e,riveted or otherwise fixed thereto, and within the basal portion a isset a washerf, which forms an abutment for Wings g, stamped out of thesides'of the screw-stem l), so as to prevent -blocks made separatelyfrom the members A and B endwise motion of the stem b in its socket.rIhe nut d is held against turning with respect to the member B bypressing the sides of the latter around the edges of the nut, as shownby the lines h in Fig. 4, the pressure being preferably such as to holdthe nut d in position by causing the opposite angles of the nut to beenveloped by the member B, so that it forms a substantially integralpiece with the member B.

The legs of the members A and B are somewhat'spread, as shown, those ofthe member A carrying on their ends wedge-blocks 'i and those of themember B carrying wedge- The blocks t' and may be either and rivetedthereto by means of rivets k Z, as shown in Figs. 1 and 3, or they maybe formed integral therewith, as shown in Fig. 5, depending on thegreater facility of manufacture. The inner blocks j have oblique outerwedge-faces m, and the outer blocks i or else the inner surfaces of theextremities of the member A have cooperating oblique wedge-faces n,while the inner faces o of the extremities of the member B are made flatand parallel to the axis, so as to grip the faces of the hub-nut, andthe outer faces p of the blocks i are also parallel to the axis andpreferably convex to conform with the inner face of the hub-guard q,Fig. 5, which they are adapted to grip. These faces might of course beprovided with corrugations or other rugosities, but this is foundunnecessary, and I therefore have shown them as smooth.

Both the members A and B are preferably arched transversely along eachleg, whereby the legs are stiifened and provided with maximum strengthwith a minimum of weight. Just above the ends of the blocks the legs-ofthe member B have cut in them longitudinal slots r, into whichY projecttongues s, of metal, stamped in the legs of the member A and turnedinwardly at right angles, as shown, thus acting as guards for the memberB and preventing the member B from rotating with respect to the memberA. The blocks L may, if preferred, have snugs t cast thereon, whichproject into the holes u left by the tongues s and abut against thebases of said tongues to prevent them from being turned back out of theslots r.

In Fig. 5 is illustrated the application of a wrench to the nut o ofawheel-hub C, mounted on an axle w and having an axle-sleevex,

IOS

The instrument is inserted into the hub in such manner that the ends ofmember B embrace the nut o thereof and the blocks i'lie Within thehub-guard g. The handle e is then turned in a right-handed direction, soas to draw the member B within the member A, and the surfaces lm, and n,meeting one another, will by continued rotation of the handle e forcethe blocks inwardly and the blocks 't outwardly until the blocks i areclamped tight against the hub-guard g. The wheel C is then raised fromthe ground and rotated in a backward direction, carrying the nut v withit until it is fully unscrewed from the axle, when the wheel may beremoved, still carrying the hub-nut o in place therein and also thehub-nut wrench. After lubricating the aXle the wheel C is then replacedand rotated in a forward direction, the nut o engaging the threads ofthe aXle and being screwed up into place, when the wrench may beremoved. The wrench serves the purpose not simply of forming a readymeans of unscrewing the nut, but also of preventing it from becomingremoved from its place with relation to the wheel, and the nut andwasher 'y cannot, therefore, be laid down and lost or pick up grit anddirt, which is subsequently transferred to the bearing. Moreover, thenut being held rigidly in alinement with the aXle while being screwed oncannot cross threads with the latter and become damaged, and the oil andgrease is prevented from becoming smeared on the hands and clothing ofslhfo operator and also on the outside of the Vhile I have hereinaboveset forth the referred form of my invention, I do not imit myself to theprecise mechanical details as shown, but reserve the right to all suchmodifications as will occur to the skilled mechanic while stillembodying the spirit of my invention.

Having thus described my invention, what I clailn as new, and desire tosecure by Letters Patent, is-

1. A hub-nut wrench comprising a pair of members slidable longitudinallyone within the other and having wedge portions on the ends thereof whichare forced against the faces of the hub-nut and hub-guard respectivelywhen the inner member is drawn within the outer member.

2. A hub-nut wrench comprising a pair of members slidable longitudinallyone entirely within the other and having wedge portions on the endsthereof which are forced against the faces of the hub-nut and hub-guardrespectively when the inner member is moved longitudinally with respectto the outer member, and a screw member adapted to move said innermember longitudinally with respect to the outer member.

3. A hub-nut wrench comprising a pair of members slidable longitudinallyone within the other and having wedge portions on the ends thereof whichare forced against the faces of the hub-nut and hub-guard respectivelywhen the inner member is drawn within the outer member, and a screw-stemrotatably mounted with respect to one of said members and having athreaded engagement with the other member whereby the inner member maybe moved longitudinally with respect to the outer member. f

4. A hub-nut wrench comprising a pair of substantially U-shaped membersthe legs whereof have a certain resiliency, each member having abuttingWedge-surfaces on the outer faces of the free ends of the inner memberand the inner faces of the free ends of the outer member, whereby whenthe inner member is drawn within the outer the legs of the inner memberare forced together and the legs of the outer are forced apart g incombination with means for drawing the innerv member Within the outermember.

5. A hub-nut wrench comprising a pair of' substantially U-shaped membersthe legs whereof have a certain resiliency, each member having abuttingwedge-surfaces on the outer faces of the free ends of the inner memberand the inner faces of the free ends of the outer member, whereby whenthe inner member is drawn within the outer the legs of the inner memberare forced together and the legs of the outer are forced apart; incombination with a screw-stem rotatably mounted in the base of one ofsaid members and having a threaded engagement with the other member.

6. A hub-nut wrench comprising a pair of substantially U-shaped membersthe legs whereof have a certain resiliency, each member having abuttingwedge-surfaces on the outer faces of the free ends of the inner memberand the inner faces of the free ends of the outer member, whereby whenthe inner member is drawn within the outer the legs of the inner memberare forced together and the legs of the outer are forced apart; in combination with a screw-stem rotatably mounted in the base of the outermember and having a threaded engagement with the base of the innermember, and a handle on the outer end of said screw-stem.

7. A hub-nut wrench comprising a pair of substantially U-shaped membersthe legs whereof have a certain resiliency, each member having abuttingwed e-surfaces formed on the outer faces of the ee ends of the innermember and the inner faces of the free ends of the outer member, wherebywhen the inner member is drawn within the outer member the legs of theinner member are forced together and the legs of the outer are forcedapart, in combination with means for drawing the inner member into theouter member; the legs of one member having longitudinal slots, and thelegs of the other member hav-` IOO ing tongues projecting into saidslots whereby relative rotation of the two members is prevented.

8. A hub-nut wrench comprising a pair of substantially U-shaped members,the legs whereof have a certain resiliency, each member having abuttingwedge-surfaces formed on the outer faces of the free ends of the innermember and the inner faces of the free ends of the outer member, wherebywhen the inner member is drawn within the outer the legs of the innermember are forced together and the legs of the outer member are forcedapart, in combination with a screw-stem rotatably mounted in the base ofthe outer member and havin a threaded engagement with the base of t einner member, and a handle on the outer end of said screw-stem, fordrawing the inner member into the outer member; the legs of one memberhaving longitudinal slots and the legs of the other member havingtongues projecting into said slots whereby relative rotation of the twomembers is prevented.

9. A hub-nut Wrench comprising a pair of U -shaped members whose legshave a certain resiliency, a screw-stem rotatably mounted in the base ofone of said members and having a threaded engagement with the base ofthe other whereby ,the inner member is moved longitudinally with respectto the outer member, a handle'mounted on the outer end of saidscrew-stem, means for preventing the relative rotation of said members,a. pair of blocks or lugs on the ends of the outer member having obliqueinner wedge-surfaces, and a pair of blocks or lugs on the ends of theinner member having coacting oblique outer wedge-surfaces whereby' thedrawing of the inner member within the outer member causes the legs ofthe inner member to be brought together, and the legs of the outermember to be forced apart.

l0. A hub-nut wrench comprising a pair of members slidablelongitudinally one entirely within the other and having wedge portionson the ends thereof which are forced against the faces of the hub-nutand hub-guard respectively when the inner member is moved longitudinallywith res ect to the outer.

In witness whereof have hereunto set my hand this 17th day of October,1905.

THOMAS OHORA. In presence of H. P. DIETRICH, L. P. DIETRICH.

